Wrench.



Patented Dec. 3|, 190|. F. BUTTOMLY.

W R E N C H (Applmcion med 9ct. 29, 1901.

(no Model.)

'45 suitable manner.

iran Sterns Pernnrr OFFICE.:

FRANK BOTTOMLY, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO JOHN II. COES AND FREDERICK L. COES, OF WORCESTER, MASSACHUSETTS.

WRENCH.

SPECIFICATION forming part ot Letters Patent No. 690,047, dated December 31, 1901. Application tiled October 29, 1901. Serial No. 80,426. (No model.)

To @ZZ whom it may concern.-

Beit known that I, FRANK BoTToMLY, a citilzen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have inventeda new and useful Improvement in Wrenches, of which the following, together with the accompanying drawings, is a specification sutiiciently full, clear, and exact to enable persons skilled in r-'o the art to which this invention appertains to make and use the same.

The present invention, which relates more 'especially to that class of wrenches known as the Coes adjustable screw-wrench, has for its object to provide, in combination with the several parts of the wrench, a simple and efficient means for retainingthe adjusting-screw `journal or bearing end in proper relation to the bearing-step of the collar or handle-frame io ferrule without requiring the notching of the wrench-bar for engagement with the rosettehead of' the adjusting-screw. I attain such object by the mechanism illustrated in the accompanying drawings, wherein- Figure l represents a side view of a wrench embodying my invention. Fig. 2 is a vertical section at the junction of the adjustingscrew and collar. Fig. 3 is a plan view of the top end of the collar or handle-frame.

Fig. 4 represents the yoke or retaining plate separately in detail by side and plan views, and Fig. 5 shows a side view of the rosette and bearing end of the screw.

Referring to the drawings, A indicates the wrench-bar, having the fixed jaw or head a and formed with handle-positioning shoulders 2, but without a rosette recess or notch at the front of the bar.

B indicates the sliding jaw, of well-known form; C, the adjusting-screw, provided with the usual thumb-boss or rosette C, and Dindicates the bearing-collar or upper end of the handle-frame, fitting the neck a of the barshank and carrying the handle-plates E in According to my present invention the bearing end or journal of the screw C is formed with a circumferential groove 3 adjacent to the rosette C and a iiange 4 below, as best shown in Figs. 2 and 5. The step projection d of the collar has its bearingopening 6 made of a size to correspond with and receive the flange 4: or end of the adjusting-screw journal. For retaining the screw in proper relation I provide a supplementary collar, yoke, or interlock plate F, Fig. 4. 5 5 Said plate F is preferably made of fiat steel about one-eighth of an inch, more or less, in thickness. The external outline is shaped substantially the same as the end of the collar D. Through the collar-plate I form an 6o opening 7, corresponding to the cross-section of the neck a of the wrench-bar A, and from said opening I form a forwardly-extending slot 8 with a semicircular end 5, said slot corresponding in width to the diameter of the grooved portion 3 of the screw-journal. The circle at the end 5 is made axially coincident with the bearing-cavity 6 in the projecting step (Z. The thickness of the plate F and groove 3 approximately correspond, so that 7o the plate will interlock into said groove, affording an easy running fit.

When the parts are assembled, the end 4c of the adjusting screw journal is passed through the opening 7 in the plate F and the 75 grooved part 3 slipped into the slot 8, so that the semicircular end 5 locks into said groove 3. The jaw B, with the end of the screw C entered therein, is then slipped onto the bar A, together with the plate F, the latter stop- 8o ping against the positioning-shoulders 2. The handle-frame is then driven onto the barshank in usual manner, the cavity 6 fitting over the end t of the journal and the'ltop end of the collar fitting firmly and flat against the under side of the plate F, which latter is thereby rigidly held between the said collar end and the shoulders 2 on the bar when the handle is secured to the bar-shank in wellknown manner by the tip-piece G and a trans- 9o verse pin I or by other efficient means. The adjusting -screw C is freely rotatable in its bearing, but is confined from endwise displacement by the engagement ot' the plate in the groove 3 and from lateral displacement 95 by engagement of the flanges 4: in the cavity 6. The screw is thus secured in proper relation, as shown in Figs. l and 2.

By the plate F a very simple and efficient means of attachment is provided, as such roo plate can be readily made by drop-forging or punching from sheet-steel, and the assemblage of the parts can be easily and quickly accomplished.

What l claim, and desire to secure by Letters Patent, is-

l. In a wrench, the combination with the wrench-bar and the rosetted adj usting-screw, of a yoke or supplementary collar-plate detachable from the collar'and adapted for ern- 'bracing the wrench-bar and for retaining the rosette-screw from endwise displacement,sub

.- stantially as set forth.

2. In a wrench of the character described, a screw-retaining plate having an opening adapted to iit the neck of the bar, and a slot extending therefrom for receiving the grooved adjusting-screw journal, said plate disposed at the end of the handle frame or collar against the handle-positioning shoulders; in combination with the wrench-bar, the collar, and

the jaw-adjusting screw having the grooved and Banged journal, for the purpose set forth.

3. A wrench comprising a wrench-bar having a xed jaw, a movable jaw sliding on said wrench-bar, a handle secured to the bar-shank and having a collar carryinga projection with a circular bearing-cavity therein, a jaw-adjusting screw having a rosette and provided with a groove around its journal adjacent to the rosette, a slotted detachable collar-plate embracing the neck of bar and the journal, and interlocking with said groove, said plate conined between the end face of the handlecollar and positioning-shoulders formed on said wrench-bar, substantially as set forth.

Witness my hand this 26th day of October,

FRANK BOTTOMLY. Witnesses:

CHAS. H. BURLEIGH, FRED A. BROOKS. 

